During the 1950’s-1970’s, 1.C. researches series of independent observational 2 . E. sequences studies suggested that dietary fiber 3.D. consumption intake was associated with a number of health benefits. Dietary fibre as a class of 4.B. mixtures compounds includes a mixture of plant carbohydrate polymers, both oligosaccharides and polysaccharides, 5.A. for examples e.g., cellulose, hemicelluloses, pectic substances,